Mitochondrial DNA and phylogeography of the grasshopper Trimerotropis pallidipennis in relation to clinal distribution of chromosome polymorphisms

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Trimerotropis pallidipennis is an American grasshopper whose South American populations are polymorphic for pericentric inversions. Colonization of southern latitudes was by North American grasshoppers with basic chromosome arrangements, presumably along the Andean dry lands of South America. In Arg...

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Autores principales: Confalonieri, V.A., Sequeira, A.S., Todaro, L., Vilardi, J.C.
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: 1998
Materias:
Grasshoppers
Inversion polymorphisms
Mitochondrial DNA
Natural selection
Panama Isthmus
Phylogeography
RFLP
Argentina
cytogenetics
gene rearrangement
insect genetics
mitochondrial DNA
North America
phylogeography
population genetics
South America
biogeography
colonization
environmental gradient
grasshopper
phylogeny
polymorphism
Acrididae
Orthoptera
Trimerotropis pallidipennis
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_0018067X_v81_n4_p444_Confalonieri
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paperaa:paper_0018067X_v81_n4_p444_Confalonieri2023-06-12T16:42:05Z Mitochondrial DNA and phylogeography of the grasshopper Trimerotropis pallidipennis in relation to clinal distribution of chromosome polymorphisms Heredity 1998;81(4):444-452 Confalonieri, V.A. Sequeira, A.S. Todaro, L. Vilardi, J.C. Grasshoppers Inversion polymorphisms Mitochondrial DNA Natural selection Panama Isthmus Phylogeography RFLP Argentina cytogenetics gene rearrangement insect genetics mitochondrial DNA North America phylogeography population genetics South America biogeography colonization environmental gradient grasshopper phylogeny polymorphism population genetics South America Acrididae Orthoptera Trimerotropis pallidipennis Trimerotropis pallidipennis is an American grasshopper whose South American populations are polymorphic for pericentric inversions. Colonization of southern latitudes was by North American grasshoppers with basic chromosome arrangements, presumably along the Andean dry lands of South America. In Argentina, the frequencies of some of the rearrangements are correlated with geographical and climatic variables, following similar patterns among different ecological gradients, and are probably maintained by geographically variable coefficients of selection. Restriction site variation of mitochondrial DNA is used as a tool for determining the species history in relation to the formation of clines. Populations located along an altitudinal gradient, and others outside the cline, are analysed through phylogeographical studies. There is no strong geographical orientation in the unrooted tree connecting all 17 mitochondrial DNA haplotypes found. Many of them are present in most of the populations analysed, indicating high gene flow. The fact that there is no obvious differentiation in haplotype distribution between both extremes of the cline nor between chromosomally differentiated populations shows that the cline is not the result of a hybrid zone and reinforces the selection hypothesis. The estimation of the overall nucleotide divergence between the hypothetical ancestral haplotype and the other molecules shows that T. pallidipennis haplotypes started diverging from each other about 3 Myr ago. This result is in agreement with the time when the Isthmus of Panama rose (2-3 Myr ago), probably favouring the migration of many species between both hemispheres. Fil:Confalonieri, V.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Sequeira, A.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Todaro, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Vilardi, J.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1998 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0018067X_v81_n4_p444_Confalonieri
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language Inglés
orig_language_str_mv eng
topic Grasshoppers
Inversion polymorphisms
Mitochondrial DNA
Natural selection
Panama Isthmus
Phylogeography
RFLP
Argentina
cytogenetics
gene rearrangement
insect genetics
mitochondrial DNA
North America
phylogeography
population genetics
South America
biogeography
colonization
environmental gradient
grasshopper
phylogeny
polymorphism
population genetics
South America
Acrididae
Orthoptera
Trimerotropis pallidipennis
spellingShingle Grasshoppers
Inversion polymorphisms
Mitochondrial DNA
Natural selection
Panama Isthmus
Phylogeography
RFLP
Argentina
cytogenetics
gene rearrangement
insect genetics
mitochondrial DNA
North America
phylogeography
population genetics
South America
biogeography
colonization
environmental gradient
grasshopper
phylogeny
polymorphism
population genetics
South America
Acrididae
Orthoptera
Trimerotropis pallidipennis
Confalonieri, V.A.
Sequeira, A.S.
Todaro, L.
Vilardi, J.C.
Mitochondrial DNA and phylogeography of the grasshopper Trimerotropis pallidipennis in relation to clinal distribution of chromosome polymorphisms
topic_facet Grasshoppers
Inversion polymorphisms
Mitochondrial DNA
Natural selection
Panama Isthmus
Phylogeography
RFLP
Argentina
cytogenetics
gene rearrangement
insect genetics
mitochondrial DNA
North America
phylogeography
population genetics
South America
biogeography
colonization
environmental gradient
grasshopper
phylogeny
polymorphism
population genetics
South America
Acrididae
Orthoptera
Trimerotropis pallidipennis
description Trimerotropis pallidipennis is an American grasshopper whose South American populations are polymorphic for pericentric inversions. Colonization of southern latitudes was by North American grasshoppers with basic chromosome arrangements, presumably along the Andean dry lands of South America. In Argentina, the frequencies of some of the rearrangements are correlated with geographical and climatic variables, following similar patterns among different ecological gradients, and are probably maintained by geographically variable coefficients of selection. Restriction site variation of mitochondrial DNA is used as a tool for determining the species history in relation to the formation of clines. Populations located along an altitudinal gradient, and others outside the cline, are analysed through phylogeographical studies. There is no strong geographical orientation in the unrooted tree connecting all 17 mitochondrial DNA haplotypes found. Many of them are present in most of the populations analysed, indicating high gene flow. The fact that there is no obvious differentiation in haplotype distribution between both extremes of the cline nor between chromosomally differentiated populations shows that the cline is not the result of a hybrid zone and reinforces the selection hypothesis. The estimation of the overall nucleotide divergence between the hypothetical ancestral haplotype and the other molecules shows that T. pallidipennis haplotypes started diverging from each other about 3 Myr ago. This result is in agreement with the time when the Isthmus of Panama rose (2-3 Myr ago), probably favouring the migration of many species between both hemispheres.
format Artículo
Artículo
publishedVersion
author Confalonieri, V.A.
Sequeira, A.S.
Todaro, L.
Vilardi, J.C.
author_facet Confalonieri, V.A.
Sequeira, A.S.
Todaro, L.
Vilardi, J.C.
author_sort Confalonieri, V.A.
title Mitochondrial DNA and phylogeography of the grasshopper Trimerotropis pallidipennis in relation to clinal distribution of chromosome polymorphisms
title_short Mitochondrial DNA and phylogeography of the grasshopper Trimerotropis pallidipennis in relation to clinal distribution of chromosome polymorphisms
title_full Mitochondrial DNA and phylogeography of the grasshopper Trimerotropis pallidipennis in relation to clinal distribution of chromosome polymorphisms
title_fullStr Mitochondrial DNA and phylogeography of the grasshopper Trimerotropis pallidipennis in relation to clinal distribution of chromosome polymorphisms
title_full_unstemmed Mitochondrial DNA and phylogeography of the grasshopper Trimerotropis pallidipennis in relation to clinal distribution of chromosome polymorphisms
title_sort mitochondrial dna and phylogeography of the grasshopper trimerotropis pallidipennis in relation to clinal distribution of chromosome polymorphisms
publishDate 1998
url http://hdl.handle.net/20.500.12110/paper_0018067X_v81_n4_p444_Confalonieri
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